JP2001205309A - Working device for continuous shear deformation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working device for continuous shear deformation with which a shear-deformed base stock is mass-produced. SOLUTION: This working device for continuous shear deformation is constituted of a die 1 for making the base stock shear-deform by passing the material through a curved base-stock passage and a base-stock guiding and feeding device 2 which is equipped at the inlet of the die 1 and with which the base stock 3 is guided and fed into the inside of the base-stock passage 8 of the die 1 by frictional contact motion with the base stock 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous shearing and deforming apparatus, and more particularly, to a shearing and deforming method in which a material is continuously supplied to a mold having a material passage where a shearing deformation is performed by bending. And a continuous shearing and deforming apparatus capable of producing a large amount of sheared and deformed materials.

[0002]

2. Description of the Related Art Generally, ECAP (Equal Channel Angula)
r Pressing) uses a mold with a partially bent material passage with a uniform cross-sectional area from the inlet to the outlet, and uses a metal billet in the upper cylinder of the mold. (Billet) is inserted and extruded by a punch, passed through the material passage, and subjected to shear deformation during the process of bending the material, making the structure of the material finer and improving the strength and formability. (Metals a
nd Materials, Vol. 4, No. 6, 1998, pp. 1181-119
0).

[0003]

However, in such a conventional shearing and deforming apparatus, since the size of the billet to be supplied is limited, only a limited length of shearing and deforming processing is possible. Yes, after extruding the billet once, it is necessary to remove the punch from the mold and supply the next billet, so it is impossible to continuously mass-produce shear deformed material There were disadvantages.

[0004] Further, in the conventional shearing and deforming apparatus, when an overload is applied to the punch, there is an inconvenience that the punch and the punch driving device may be damaged or broken. The present invention has been made in view of the problems of the conventional apparatus described above, and continuously supplies a material to a mold that undergoes shear deformation by passing through a bent material passage, and relates to the length of the material. In addition, an object of the present invention is to provide a continuous shear deformation processing apparatus capable of continuously mass-producing materials subjected to shear deformation.

Another object of the present invention is to provide a continuous shearing and deforming apparatus capable of smoothly performing continuous operation even if an unexpected overload is applied to a material supply apparatus, without being affected by the overload. It is in. Another object of the present invention is to reduce the contact friction between the mold and the material, increase the durability of the mold, reduce the force required to press the material into the mold, improve productivity and reduce cost. It is to provide a continuous shearing and deforming apparatus capable of reducing the amount of deformation.

It is another object of the present invention to provide a continuous shearing and deforming apparatus applicable to materials having various thicknesses from a thin plate to a thick material without going through a separate step. It is in.

[0007]

In order to achieve the above object, a continuous shearing and deforming apparatus according to the present invention according to the first aspect of the present invention is provided by passing a supplied material through a bent material passage. A mold to be subjected to shear deformation, and a material guiding / supplying device installed at the entrance of the mold and guiding / supplying the material into the material passage of the mold by frictional contact motion with the material. It is characterized by the following.

According to a second aspect of the present invention, there is provided a continuous shearing and deforming apparatus according to the present invention, wherein the material guiding and supplying device is a rotating roll. In the continuous shearing and deforming apparatus according to the present invention, the material guide supply device is a belt-type transmission mechanism, and the belt-type transmission mechanism includes, for example, a plurality of polyhedral blocks sequentially connected in a loop. It is characterized by having a configuration.

According to a fifth aspect of the present invention, there is provided a continuous shearing and deforming apparatus according to the present invention, further comprising a belt-type guide transfer device for guiding and transferring the sheared material. A belt-type transmission mechanism is used as the continuous-shear-deformation processing device according to the present invention according to claim 6, and the belt-type guide supply device, and the belt-type transmission mechanism converts the material shear-deformed by frictional contact into the material. It is configured to guide and transfer from the exit of the passage to the outside thereof.

According to a seventh aspect of the present invention, there is provided the continuous shear deformation processing apparatus according to the present invention, wherein the material passage has an inclined inlet. According to an eighth aspect of the present invention, in the continuous shear deformation processing apparatus, the thickness of the material before passing through the material guiding and supplying device is larger than the thickness of the material after passing.

In this case, since the material is rolled according to the width of the material passage without going through a separate step, for example,
It is possible to provide a compatible shear deformation device that can be used for materials of various thicknesses regardless of the thickness of the material, from thin plate materials of 0.5 mm or less to thick materials. When there is a considerable difference between the thickness of the material and the width of the material supply path, a material guide supply device having a plurality of pairs of rotating rolls may be used to gradually reduce the thickness and supply the material to the mold. I can do it.

According to a ninth aspect of the present invention, in order to increase the frictional contact force with the material, a peripheral groove having a sectional shape substantially similar to the sectional shape of the material is formed on the frictional contact surface. It is characterized by forming. In this case, a separate material having a high coefficient of friction may be coated, or the surface roughness may be increased, and a material having a large coefficient of friction may be used as the main body of the material guiding and supplying device.

Further, the device for enhancing the frictional contact force with the material can be applied to the belt-type guide transfer device according to the fifth and sixth aspects.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. In one embodiment of the continuous shear deformation processing apparatus according to the present invention, as shown in FIG. 1, a sheet-like material having a material passage 8 having a partially bent shape and passing through the inside of the material passage 8 is provided. 3 has a pair of rotating rolls 2a and 2b mounted at the entrance of the mold 1 and having a pair of rotating rollers 2a and 2b. A material guiding and supplying device 2 that continuously supplies the material 3 into the material passage 8 of the mold 1, and the supplied material 3 is bent in the material passage 8 while being sheared and deformed. It is to be discharged from.

When the material 3 is thick and bent at a large angle, a strong press input is required for the material 3 for shear deformation. Therefore, a plurality of pairs of rotating rolls are used. The rotating roll of the guide supply device 2 is coated with a material having a high coefficient of friction, or the surface roughness of the material guide supply device 2 is increased, and the material passage 8 inside the mold 1 is processed smoothly to lubricate. Oil can be supplied, thus reducing the required pressure input.

On the other hand, when the material 3 is thin and the angle at which it is bent is small, the force required for shearing deformation is reduced, so that the material is smoothly transferred from the rotating roll of the material guiding and feeding device 2 to the mold 1. Is supplied. However, the material 3 is thin, and the rotating roll of the material guide supply device 2 and the mold 1
If the distance from the entrance of the material is long, the material 3
Since the material is not supplied smoothly to the inside of the mold and the material may be buckled outside the mold, the rotating roll of the material guiding and supplying device 2 is installed as close to the mold 1 as possible. It is desirable.

A cutting machine (not shown) is installed on the exit side of the material passage 8 of the mold 1, and the bending shear deformation treatment which has been passed through the material passage 1 and discharged to the outside of the exit is performed. The material 3 can be cut to an appropriate length. When the material guide supply device 2 is overloaded,
Since the slip occurs between the material guiding and supplying device 2 and the material 3 and plays a role of a safety device, the damage of the guiding and supplying device 2 due to an unintended overload is prevented.

Next, a second embodiment of the continuous shear deformation processing apparatus according to the present invention is shown in FIG. In this apparatus, a pair of material guide supply devices 2 including a plurality of rotating rolls 6 and a rotating belt 5 hung on the rotating rolls 6 and covered with rubber or a metal plate are formed. The configuration is the same as in the first embodiment. In this embodiment, when the material 3 is continuously guided and supplied to the material passage 8 of the mold 1 by frictional contact between the belt 5 and the sheet material 3, the contact area between the rotating belt 5 and the material 3 is increased. Is widened, and a strong press input is applied to the material 3. Therefore, it is effective when the material 3 is thick and has a large bending angle.

When it is necessary to ensure reliable transmission between the respective belts 5 and the rotating rolls 6 for driving the belts 5, the use of the chain-shaped belt 5 and the sprocket-shaped rotating rolls 6 makes it possible to ensure mutual mutual reliability. An engagement can be obtained. FIG. 3 shows another example of the belt-type material guide / supply device 2 according to the second embodiment. This device uses a belt in which a plurality of polyhedron blocks 5 are sequentially connected in a loop. Since the contact area between the material guiding / supplying device 2 and the material 3 is increased, the material 3 is applied with a very strong press input. Can be continuously inserted into the material passage 8.

FIG. 4 shows a third embodiment of the continuous shear deformation processing apparatus according to the present invention. This apparatus uses a mold 1 having an inclined inlet, and a material guide supply device 2 including two rotating rolls 2a and 2b is attached to the entrance of the mold 1. The material 3 that has passed between the rotating rolls 2 is supplied to the inlet of the material passage 8 while continuously contacting the peripheral surface of the rotating roll 2b on one side for a predetermined time. It is configured to increase the friction area between the material 2 and the material 3 and to obtain a high pressure input.

FIG. 5 shows a fourth embodiment of the continuous shear deformation processing apparatus according to the present invention. This constitutes a material guide supply device 2 having only one rotating roll 2a, and a relatively small pressure using a mold 1 having an inclined inlet portion similar to that of the third embodiment. The material is guided and supplied by input. FIG. 6 shows a continuous shear deformation processing apparatus according to a fifth embodiment of the present invention. This forms a material guiding and supplying device 2 having a pair of rotating rolls 2a and 2b with a larger interval between the rotating rolls than in the third embodiment, and the other components are configured in the same manner as in the third embodiment. After the thick sheet material 3 is thinly rolled by the rotating rolls 2a and 2b, it is supplied to the material passage 8 of the mold 1. In this case, the contact area between the rotating rolls 2a, 2b and the material 3 is large, and the rotating rolls 2a, 2b convey the material 3 while strongly pressing the material 3, so that the peripheral surface of the rotating rolls 2a, 2b A high pressure input can be generated without coating the surface of the rotary roll 2 with a rubber film or making the surface of the rotating roll 2 rough. Also, since the material 3 having various thicknesses can be used, the mold 1
There is an advantage that it is not necessary to perform a separate process for obtaining a material having a thickness suitable for the device.

When the material 3 is very thick, a plurality of pairs of rotating rolls are arranged so that the relative intervals are sequentially reduced, and the material 3 is sequentially passed between the plurality of pairs of rotating rolls 2a and 2b. The mold is made by gradually reducing the material thickness
It can also be configured to be supplied to one. Fig. 7 (A)
1 shows a deformation mode of a shear deformation processing device including a material guide supply device 2 and a material 3 according to the present invention, (A) is a schematic front view, (B) is a cross section of a rotating roll, and (C) is a deformation thereof. 2 shows a cross section of an embodiment.

As shown in the figure, the circumferential surfaces of the rotating rolls 2a and 2b of the material guiding / supplying device 2 have circumferential grooves 10 (B), (C) or 10 having a rectangular cross-sectional shape similar to the cross-sectional shape of the material 3. Although not shown, a circumferential groove 11 having a semicircular cross section is formed. For this reason, the contact area between the peripheral surface of the rotating roll 2 and the material 3 becomes very large, and a high pressure input to the material 3 is generated.

When the material 3 passes through the rotating rolls 2a and 2b, when the material 3 is pressed and pressed as shown in FIG.
A higher material press-in force can be obtained. Fig. 8 (A)
FIGS. 4A and 4B are views showing a belt-type guide transfer device 13 for guiding and transferring the material after the shear deformation processing according to the present invention at the exit of the mold 1, wherein the material passage 8 (not shown) is bent. An outlet-side belt-type guide transfer device 13 for guiding and transferring the material from the portion to the outside of the mold by frictional force with the material 3 is provided at the outlet of the bent portion. As a result, the pressure input of the material on the mold inlet side can be reduced. As the belt-type guide transfer device 13, a belt having various structures and forms, such as a belt 15 formed by connecting metal plates or high-strength material pieces, or a belt in which polyhedral blocks are sequentially connected in a loop type, is used. be able to.

Here, since the belt in the belt-type guide and transfer device 13 moves continuously together with the material 3,
It serves to reduce the friction area between the material 3 and the mold 1 and increase the life of the mold 1. On the other hand, as another embodiment of the guide transfer device 13, the guide transfer of the material can be performed by installing a rotating roll outside the exit of the mold 1. Such a guide transfer device may be configured not only to reduce the force required for press-fitting the material, but also to roll or flatten the discharged material.

[0026]

As described above, in the continuous shearing and deforming apparatus according to the first aspect of the present invention, the material is continuously supplied to the bent material passage in the mold to shear the material. Since the material is deformed, there is an effect that various materials subjected to shear deformation can be continuously mass-produced regardless of the material specifications.

Further, in the continuous shearing and deforming apparatus according to the present invention, even if an overload is applied to the material guide supply device for supplying the material into the material passage of the mold, the material guide is provided. There is an effect that the smooth operation can be continuously performed by the sliding of the material in the supply device. Further, in the continuous shearing and deforming apparatus according to the present invention as set forth in claims 5 to 7, the friction between the mold and the material is reduced to increase the life of the mold and to reduce the force required for press-fitting the material. This has the effect of increasing productivity and reducing costs.

Further, in the continuous shearing and deforming apparatus according to the present invention, there is an effect that a material having various thicknesses can be sheared without passing through a separate step. In the continuous shearing apparatus according to the ninth aspect of the present invention, it is possible to increase the pressure input of the material into the material passage of the mold.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of a continuous shear deformation processing apparatus according to the present invention, and is a schematic longitudinal sectional view showing a case where a guide supply device has a pair of rotating rolls.

FIG. 2 is a schematic longitudinal sectional view showing a case where a material guide supply device is formed by a belt transmission mechanism as a second embodiment of the continuous shear deformation processing device according to the present invention.

3 is a schematic vertical sectional view showing a belt-type material guide / supply device in which a plurality of polyhedral blocks are sequentially connected in a loop as a modification of the material guide / supply device shown in FIG. 2;

FIG. 4 is a schematic longitudinal sectional view showing a case in which a mold having an inclined inlet portion of a material passage is used as a third embodiment of the continuous shear deformation processing apparatus according to the present invention.

FIG. 5 is a schematic longitudinal sectional view showing a case where a material guiding and supplying device having one roll is used as a fourth embodiment of the continuous shear deformation processing device according to the present invention.

FIG. 6 is a schematic longitudinal sectional view showing a case where the thickness of a material is reduced by a material guiding and supplying device as a fifth embodiment of the continuous shear deformation processing device according to the present invention.

FIG. 7 is a view showing a shear deformation processing device using a guide supply device for increasing a contact area with a material,
(A) is a schematic longitudinal sectional view, (B) and (C) are sectional views showing a rotating roll.

FIG. 8 is a view showing a belt-type guide transfer device for guiding and transferring a material after shear deformation, (A) is a side view, and (B).
Is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die 2 Material guide supply device 2a, 2b Rotating roll 3 Material 4 Material supply path 5 Polyhedral block 8 Material passage 10, 11 Circumferential groove 13 Belt type guide transfer device

 ──────────────────────────────────────────────────の Continued on the front page (72) Ingen-Moon, South Korea, Seoul, Jeong-dung-Pok, Yoido-Don, 28 (72) Inventor Mun-Cul-Sin, South Korea, Seoul, Dong-da-Meng, Cheongrangangli 1-dong, 235-1

Claims (9)

[Claims] 1. A mold for shearing a material by passing the material through a curved material passage, and a device provided at an entrance of the mold, wherein the material is subjected to frictional contact with the material and the material is moved to the material of the mold. And a material guiding and supplying device for guiding and supplying the inside of the passage. 2. The continuous shear deformation processing device according to claim 1, wherein the material guide supply device is a rotating roll. 3. The continuous shearing and deforming apparatus according to claim 1, wherein the material guiding and supplying device is a belt type transmission mechanism. 4. The continuous shearing and deforming apparatus according to claim 3, wherein the belt-type transmission mechanism has a structure in which a plurality of polyhedral blocks are sequentially connected in a loop. 5. The continuous shear deformation processing apparatus according to claim 1, further comprising a belt-type guide transfer device for guiding and transferring the material subjected to the shear deformation processing. 6. The belt-type guide transfer device is a belt-type transmission mechanism, and the belt-type transmission mechanism transfers the material immediately after being subjected to shear deformation to an outlet of the material passage by frictional contact between the belt and the material. 6. The continuous shearing and deforming apparatus according to claim 5, wherein the apparatus is configured to be guided and transferred from outside to outside. 7. The continuous shear deformation processing apparatus according to claim 1, wherein the material passage has an inclined inlet. 8. The material guide supply device according to claim 1, wherein the width of the material passage formed by the material guide supply device is smaller than the thickness of the material introduced into the material guide supply device. 5. The continuous shear deformation processing device according to 5. 9. The material guiding and feeding device according to claim 1, wherein a peripheral groove having a cross-sectional shape substantially similar to a cross-sectional shape of the raw material is formed on a contact surface of the raw material guiding and supplying device in contact with the raw material.
5. The continuous shear deformation processing device according to any one of the above.